Recommend way to move F5's to a new DC

Ideally you'd do a UCS archive backup on the existing F5, and do a restore on the new F5. There are things to consider regarding platforms, code versions, etc. For example, if the UCS restore is on a different platform, the restore will succeed given you use the no-platform-check option, but the config will fail to load. You would then have to manually edit the config to clean up any conflicting items. It's not a difficult process but can be a bit frustrating the first time around.